D018344DisordersC15.378.553.546.605.800C20.673.627.800T-Lymphocytopenia, Idiopathic CD4-Positiveprns:meshDescriptorUIMeSH DescriptorUIprns:meshSemanticGroupNameMeSH semantic group nameprns:meshTreeNumberMeSH tree numberrdf:typetyperdfs:labellabelConcept